Autodesk LIGHTSCAPE, Manual

Page: 180 / 362

Radiosity Processing 11
172
Lightscape
scape breaks down every surface in the model into
an initial coarse mesh.
After you have initiated the model, you begin the
radiosity processing. The progressive refinement
iterations propagate light to the surfaces in the scene.
As each iteration completes, the intermediate results
of the simulation are displayed using the current
display mode. You can also run radiosity solutions as
batch processes. For more information, see
Appendix B, “Batch Processing Utilities.”
Though Lightscape freezes the geometry of the
scene at initiation, you can modify materials and
light source properties at any point during the simu-
lation. The system automatically compensates for
changes in light contributions without having to
reset the solution and restart the simulation from
scratch.
To process a radiosity solution:
1.
Set the processing parameters. For information,
see “Setting the Processing Parameters” on page 172.
2.
Set the surface processing parameters, if re-
quired. For information, see “Setting the Surface
Processing Parameters” on page 179.
3.
Initiate the model. For information, see “Initiat-
ing the Model” on page 181.
4.
Process the solution. For information, see “Pro-
cessing the Radiosity Solution” on page 182.
5. If required, refine the solution. You can adjust
the processing parameters or modify material and
light properties. For information, see “Changing
Materials and Luminaires” on page 184.
Setting the Processing
Parameters
The processing parameters affect the accuracy,
speed, and memory usage of a radiosity simulation
over the entire scene.
To set processing parameters:
1.
Choose Process | Parameters.
The Process Parameters dialog appears.
2.
Set the meshing parameters in the Receiver
group box. For information, see “Setting Receiver
Parameters” on page 173.
The Process Parameters dialog